CN104425116B - A kind of magnetic controllable transformer - Google Patents

A kind of magnetic controllable transformer Download PDF

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Publication number
CN104425116B
CN104425116B CN201310413656.1A CN201310413656A CN104425116B CN 104425116 B CN104425116 B CN 104425116B CN 201310413656 A CN201310413656 A CN 201310413656A CN 104425116 B CN104425116 B CN 104425116B
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China
Prior art keywords
transformer
iron core
winding
primary side
direct current
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CN104425116A (en
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王承民
史伟伟
刘涌
李宏仲
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SHANGHAI PROINVENT INFORMATION TECH Ltd
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SHANGHAI PROINVENT INFORMATION TECH Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

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Abstract

The present invention relates to a kind of magnetic controllable transformer, including:Iron core;Primary side exchanges winding, is wrapped on iron core, is used as the input side of transformer;Secondary side exchanges winding, is wrapped on iron core, is used as the outlet side of transformer;Direct current winding, is wrapped on iron core, and as the control side of transformer, the size of DC current is passed through by changing, and changes the degree of saturation of iron core, and then change reactive-load compensation amount.Compared with prior art, the present invention has adjusts equivalent reactance of the transformer in power network by changing the degree of saturation of transformer core, so that the advantages of changing the reactive-load compensation amount of transformer.

Description

A kind of magnetic controllable transformer
Technical field
The present invention relates to a kind of transformer, more particularly, to a kind of magnetic controllable transformer, by controlling iron core magnetic saturation journey Degree carries out controllable reactive-load compensation to power system.
Background technology
With continuing to develop for national economy, Power System Reliability into people increasingly pay close attention to the problem of.China Power station is often apart from each other, it is necessary to which over long distances, multi-level power network could complete power transmission task with big city.But with away from From lengthening and network increasingly complication, the destabilizing factor brought by load fluctuation is also increasingly sharpened, while with power network The rise of voltage class is very big to idle changes in demand.Therefore need to take multiple means to ensure idle balance.It is in parallel Reactor and shunt capacitor are two kinds of extraordinary compensation ways, but both have respective defect.Traditional thyristors electricity in parallel Anti- device maintenance cost is high, and control technology difficulty is big, and distortion factor is big;Shunt capacitor switching frequency is limited, can only switching in groups, It is unable to consecutive variations.
In addition, with energy crisis, global warming the problems such as influence, it is tight that China is faced with conventional energy resource The present situation that the use of scarce, traditional energy can have an immense impact on to environment, development and utilization novel renewable energy just seems outstanding To be important.In terms of world wide, with fastest developing speed in regenerative resource is wind-power electricity generation and photovoltaic generation.1980 to 2000 Year, world's installed capacity of wind-driven power surges to 17710MW from 10MW.And the wind-powered electricity generation of China is in speed in recent years also to be closely doubled Increase.Ended for the end of the year 2008, Chinese accumulative installed capacity has reached 12121MW.The wind-powered electricity generation industry of such fast development, plus The upper generating itself having is unstable, uncontrollable feature, is necessarily required to more stablize, rapidly, reliable reactive-load compensation Device accesses power network, and magnetic controllable transformer is exactly proposed in this context.
The generation of magnetic controllable transformer comes from research for many years for magnetic controllable inductor.With magnetic controllable inductor Increasingly mature and widely use, its low-maintenance cost, the advantage of low harmonic content increasingly appears.From the point of view of Electrical Motor, magnetic Controlled reactor can regard the transformer of secondary side open circuit as, and in power network, and the Type Equivalent Circuit Model of transformer is again often It is a net resistance device, so, theoretically the two can be combined, using the principle of magnetic controllable inductor, both adjusted Reactive-load compensation amount, realizes power transmission again.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of magnetic controllable transformer.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of magnetic controllable transformer, it is characterised in that including:
Iron core;
Primary side exchanges winding, is wrapped on iron core, is used as the input side of transformer;
Secondary side exchanges winding, is wrapped on iron core, is used as the outlet side of transformer;
Direct current winding, is wrapped on iron core, and as the control side of transformer, the size of DC current is passed through by changing, Change the degree of saturation of iron core, and then change reactive-load compensation amount.
Described iron core primary side is provided with two iron core columns, and two iron core column top halfs are used for primary side and exchange winding Winding, the latter half is wound for direct current winding.
Described primary side exchange winding, is connected with power network, primary side current is introduced into transformer, one is formed in iron core Secondary side exchange flux, the primary side exchange winding winding direction in two iron core columns of iron core primary side is consistent, so as to ensure The exchange flux of primary side will not form circulation in two iron core columns of iron core primary side.
Two iron core columns of iron core primary side direct current winding winding direction on the contrary, so as to ensureing it inside primary side Flux closure, beneficial to the degree of saturation for changing transformer core.
Working condition of the state by transformer of winding is exchanged with secondary side according to the size of DC current in direct current winding It is divided into three below state:
(1) reactor state
Under reactor state, secondary side exchange winding is opened a way, and the big I of DC current arbitrarily changes in direct current winding, from And change the reactive-load compensation amount of magnetic controllable transformer;
(2) transformer state
Under transformer state, DC current size is zero in direct current winding, no longer changes the degree of saturation of iron core, at this moment Magnetic controllable transformer can not change the size of reactive-load compensation amount, only idle to system balance by itself equivalent reactance value, but Carry out transformation and power transmission while no harmonic wave can be stablized under this state;
(3) state is blended together
Under the state of blending together, the presence secondary side current of magnetic controllable transformer carries out transformation and power transmission, same with this When, by changing the size of DC current in direct current winding, change the degree of saturation of iron core, so as to change transformer equivalent electric Anti- size, to change the compensation rate of transformer.
Compared with prior art, the present invention has adjusts transformer in power network by changing the degree of saturation of transformer core In equivalent reactance, so as to change the reactive-load compensation amount of transformer, both have adjusted reactive-load compensation amount, power transmission realized again.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, a kind of magnetic controllable transformer, including:
Iron core 1;
Primary side exchanges winding 2, is wrapped on iron core 1, is used as the input side of transformer;
Secondary side exchanges winding 3, is wrapped on iron core 1, is used as the outlet side of transformer;
Direct current winding 4, is wrapped on iron core 1, and as the control side of transformer, the big of DC current is passed through by changing It is small, change the degree of saturation of iron core, and then change reactive-load compensation amount.
Described iron core 1 is to be stacked to form by silicon steel sheet, and its primary side is provided with two iron core columns, two iron core column upper half Part is used for primary side exchange winding winding, and the latter half is wound for direct current winding.Iron core column diameter is by transformer Capacity is determined.
Described primary side exchange winding 2, is connected with power network, primary side current is introduced into transformer, formed in iron core Primary side exchange flux, the primary side exchange winding winding direction in two iron core columns of iron core primary side is consistent, so as to protect The exchange flux of the primary side of card will not form circulation in two iron core columns of iron core primary side.I.e. for primary side exchange around For group 2, the presence for splitting core has no influence to its magnetic circuit.The different and used winding wires of voltage class are connect according to transformer The difference of the model of circle, reasonable selection and the model and the number of turn for calculating coil.
Described secondary side exchange winding 3, is connected with power network, is the outlet side of transformer, make the carry out of transformer idle Also the transmission of active power can be carried out while compensation.The different and used winding coils of voltage class are connect according to transformer Model difference, reasonable selection and calculate coil model and the number of turn.
Described direct current winding, according to the reactive-load compensation of power network the need for, by control loop change be passed through DC current Size, so as to change the degree of saturation of iron core, and then change reactive-load compensation amount.In two iron core columns of iron core primary side Direct current winding winding direction is on the contrary, so as to ensure that it is closed in primary side interior flux, beneficial to the saturation for changing transformer core Degree.Because direct current winding does not access higher voltage class, the selection of the number of turn and model of its winding is solely dependent upon idle The size of compensation adjustment scope.

Claims (3)

1. a kind of magnetic controllable transformer, it is characterised in that including:
Iron core;
Primary side exchanges winding, is wrapped on iron core, is used as the input side of transformer;
Secondary side exchanges winding, is wrapped on iron core, is used as the outlet side of transformer;
Direct current winding, is wrapped on iron core, and as the control side of transformer, the size of DC current is passed through by changing, is changed The degree of saturation of iron core, and then change reactive-load compensation amount;
Described iron core primary side is provided with two iron core columns, and two iron core column top halfs are used for primary side exchange winding and twined Around the latter half is wound for direct current winding;
The working condition of transformer is divided into according to the state that the size of DC current in direct current winding exchanges winding with secondary side Three below state:
(1) reactor state
Under reactor state, secondary side exchange winding is opened a way, and the big I of DC current arbitrarily changes in direct current winding, so as to change Become the reactive-load compensation amount of magnetic controllable transformer;
(2) transformer state
Under transformer state, DC current size is zero in direct current winding, no longer changes the degree of saturation of iron core, at this moment magnetic can Control transformer can not change the size of reactive-load compensation amount, only idle to system balance by itself equivalent reactance value, but this Carry out transformation and power transmission while no harmonic wave can be stablized under state;
(3) state is blended together
Under the state of blending together, there is secondary side current in magnetic controllable transformer, that is, carry out transformation and power transmission, at the same time, lead to The size for changing DC current in direct current winding is crossed, changes the degree of saturation of iron core, so as to change the big of transformer equivalent reactance It is small, to change the compensation rate of transformer.
2. a kind of magnetic controllable transformer according to claim 1, it is characterised in that described primary side exchange winding, with Power network is connected, and primary side current is introduced into transformer, primary side exchange flux is formed in iron core, at two of iron core primary side Primary side exchange winding winding direction in iron core column is consistent, so as to ensure that the exchange flux of primary side will not be in iron core primary side Two iron core columns in formed circulation.
3. a kind of magnetic controllable transformer according to claim 1, it is characterised in that in two iron core columns of iron core primary side On direct current winding winding direction on the contrary, so as to ensure that it is closed in primary side interior flux, beneficial to changing transformer core Degree of saturation.
CN201310413656.1A 2013-09-11 2013-09-11 A kind of magnetic controllable transformer Active CN104425116B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310413656.1A CN104425116B (en) 2013-09-11 2013-09-11 A kind of magnetic controllable transformer
HK15105306.1A HK1204824A1 (en) 2013-09-11 2015-06-03 A magnetic controllable transformer

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CN104425116B true CN104425116B (en) 2017-07-28

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105261466B (en) * 2015-10-20 2018-05-01 天津市天传鑫丰电气科技发展有限公司 Magnetic control REgulatable reactor
CN105552891A (en) * 2015-12-28 2016-05-04 国网山东省电力公司枣庄供电公司 Direct current control apparatus for magnetic control transformer
CN105846543B (en) * 2016-03-17 2018-09-04 国网山东省电力公司枣庄供电公司 A kind of magnetic control transformer voltage control parameter acquisition and analysis device
CN106411203B (en) * 2016-11-07 2019-03-01 西安交通大学 A kind of magnet controlled time-sharing multiplex integrated intelligent distribution transformer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177418A (en) * 1977-08-04 1979-12-04 International Business Machines Corporation Flux controlled shunt regulated transformer
CN1188921A (en) * 1997-08-03 1998-07-29 陈建 Simple and reliable compensation voltage regulator
CN201230213Y (en) * 2008-07-16 2009-04-29 山东新科特电气有限公司 Magnet controlled voltage regulating reactive automatic compensation device
CN201498341U (en) * 2009-06-08 2010-06-02 赵国生 Single-phase pressure-adjusting MCR

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177418A (en) * 1977-08-04 1979-12-04 International Business Machines Corporation Flux controlled shunt regulated transformer
CN1188921A (en) * 1997-08-03 1998-07-29 陈建 Simple and reliable compensation voltage regulator
CN201230213Y (en) * 2008-07-16 2009-04-29 山东新科特电气有限公司 Magnet controlled voltage regulating reactive automatic compensation device
CN201498341U (en) * 2009-06-08 2010-06-02 赵国生 Single-phase pressure-adjusting MCR

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CN104425116A (en) 2015-03-18

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